/**
 * @author qiao / https://github.com/qiao
 * @author mrdoob / http://mrdoob.com
 * @author alteredq / http://alteredqualia.com/
 * @author WestLangley / http://github.com/WestLangley
 * @author erich666 / http://erichaines.com
 */
/*global THREE, console */

(function () {
  function OrbitConstraint(object) {
    this.object = object;

    // "target" sets the location of focus, where the object orbits around
    // and where it pans with respect to.
    this.target = new THREE.Vector3();

    // Limits to how far you can dolly in and out ( PerspectiveCamera only )
    this.minDistance = 0;
    this.maxDistance = Infinity;

    // Limits to how far you can zoom in and out ( OrthographicCamera only )
    this.minZoom = 0;
    this.maxZoom = Infinity;

    // How far you can orbit vertically, upper and lower limits.
    // Range is 0 to Math.PI radians.
    this.minPolarAngle = 0; // radians
    this.maxPolarAngle = Math.PI; // radians

    // How far you can orbit horizontally, upper and lower limits.
    // If set, must be a sub-interval of the interval [ - Math.PI, Math.PI ].
    this.minAzimuthAngle = -Infinity; // radians
    this.maxAzimuthAngle = Infinity; // radians

    // Set to true to enable damping (inertia)
    // If damping is enabled, you must call controls.update() in your animation loop
    this.enableDamping = false;
    this.dampingFactor = 0.25;

    ////////////
    // internals

    var scope = this;

    var EPS = 0.000001;

    // Current position in spherical coordinate system.
    var theta;
    var phi;

    // Pending changes
    var phiDelta = 0;
    var thetaDelta = 0;
    var scale = 1;
    var panOffset = new THREE.Vector3();
    var zoomChanged = false;

    // API

    this.getPolarAngle = function () {
      return phi;
    };

    this.getAzimuthalAngle = function () {
      return theta;
    };

    this.rotateLeft = function (angle) {
      thetaDelta -= angle;
    };

    this.rotateUp = function (angle) {
      phiDelta -= angle;
    };

    // pass in distance in world space to move left
    this.panLeft = (function () {
      var v = new THREE.Vector3();

      return function panLeft(distance) {
        var te = this.object.matrix.elements;

        // get X column of matrix
        v.set(te[0], te[1], te[2]);
        v.multiplyScalar(-distance);

        panOffset.add(v);
      };
    })();

    // pass in distance in world space to move up
    this.panUp = (function () {
      var v = new THREE.Vector3();

      return function panUp(distance) {
        var te = this.object.matrix.elements;

        // get Y column of matrix
        v.set(te[4], te[5], te[6]);
        v.multiplyScalar(distance);

        panOffset.add(v);
      };
    })();

    // pass in x,y of change desired in pixel space,
    // right and down are positive
    this.pan = function (deltaX, deltaY, screenWidth, screenHeight) {
      if (scope.object instanceof THREE.PerspectiveCamera) {
        // perspective
        var position = scope.object.position;
        var offset = position.clone().sub(scope.target);
        var targetDistance = offset.length();

        // half of the fov is center to top of screen
        targetDistance *= Math.tan(((scope.object.fov / 2) * Math.PI) / 180.0);

        // we actually don't use screenWidth, since perspective camera is fixed to screen height
        scope.panLeft((2 * deltaX * targetDistance) / screenHeight);
        scope.panUp((2 * deltaY * targetDistance) / screenHeight);
      } else if (scope.object instanceof THREE.OrthographicCamera) {
        // orthographic
        scope.panLeft(
          (deltaX * (scope.object.right - scope.object.left)) / screenWidth
        );
        scope.panUp(
          (deltaY * (scope.object.top - scope.object.bottom)) / screenHeight
        );
      } else {
        // camera neither orthographic or perspective
        console.warn(
          "WARNING: OrbitControls.js encountered an unknown camera type - pan disabled."
        );
      }
    };

    this.dollyIn = function (dollyScale) {
      if (scope.object instanceof THREE.PerspectiveCamera) {
        scale /= dollyScale;
      } else if (scope.object instanceof THREE.OrthographicCamera) {
        scope.object.zoom = Math.max(
          this.minZoom,
          Math.min(this.maxZoom, this.object.zoom * dollyScale)
        );
        scope.object.updateProjectionMatrix();
        zoomChanged = true;
      } else {
        console.warn(
          "WARNING: OrbitControls.js encountered an unknown camera type - dolly/zoom disabled."
        );
      }
    };

    this.dollyOut = function (dollyScale) {
      if (scope.object instanceof THREE.PerspectiveCamera) {
        scale *= dollyScale;
      } else if (scope.object instanceof THREE.OrthographicCamera) {
        scope.object.zoom = Math.max(
          this.minZoom,
          Math.min(this.maxZoom, this.object.zoom / dollyScale)
        );
        scope.object.updateProjectionMatrix();
        zoomChanged = true;
      } else {
        console.warn(
          "WARNING: OrbitControls.js encountered an unknown camera type - dolly/zoom disabled."
        );
      }
    };

    this.update = (function () {
      var offset = new THREE.Vector3();

      // so camera.up is the orbit axis
      var quat = new THREE.Quaternion().setFromUnitVectors(
        object.up,
        new THREE.Vector3(0, 1, 0)
      );
      var quatInverse = quat.clone().inverse();

      var lastPosition = new THREE.Vector3();
      var lastQuaternion = new THREE.Quaternion();

      return function () {
        var position = this.object.position;

        offset.copy(position).sub(this.target);

        // rotate offset to "y-axis-is-up" space
        offset.applyQuaternion(quat);

        // angle from z-axis around y-axis

        theta = Math.atan2(offset.x, offset.z);

        // angle from y-axis

        phi = Math.atan2(
          Math.sqrt(offset.x * offset.x + offset.z * offset.z),
          offset.y
        );

        theta += thetaDelta;
        phi += phiDelta;

        // restrict theta to be between desired limits
        theta = Math.max(
          this.minAzimuthAngle,
          Math.min(this.maxAzimuthAngle, theta)
        );

        // restrict phi to be between desired limits
        phi = Math.max(this.minPolarAngle, Math.min(this.maxPolarAngle, phi));

        // restrict phi to be betwee EPS and PI-EPS
        phi = Math.max(EPS, Math.min(Math.PI - EPS, phi));

        var radius = offset.length() * scale;

        // restrict radius to be between desired limits
        radius = Math.max(this.minDistance, Math.min(this.maxDistance, radius));

        // move target to panned location
        this.target.add(panOffset);

        offset.x = radius * Math.sin(phi) * Math.sin(theta);
        offset.y = radius * Math.cos(phi);
        offset.z = radius * Math.sin(phi) * Math.cos(theta);

        // rotate offset back to "camera-up-vector-is-up" space
        offset.applyQuaternion(quatInverse);

        position.copy(this.target).add(offset);

        this.object.lookAt(this.target);

        if (this.enableDamping === true) {
          thetaDelta *= 1 - this.dampingFactor;
          phiDelta *= 1 - this.dampingFactor;
        } else {
          thetaDelta = 0;
          phiDelta = 0;
        }

        scale = 1;
        panOffset.set(0, 0, 0);

        // update condition is:
        // min(camera displacement, camera rotation in radians)^2 > EPS
        // using small-angle approximation cos(x/2) = 1 - x^2 / 8

        if (
          zoomChanged ||
          lastPosition.distanceToSquared(this.object.position) > EPS ||
          8 * (1 - lastQuaternion.dot(this.object.quaternion)) > EPS
        ) {
          lastPosition.copy(this.object.position);
          lastQuaternion.copy(this.object.quaternion);
          zoomChanged = false;

          return true;
        }

        return false;
      };
    })();
  }

  // This set of controls performs orbiting, dollying (zooming), and panning. It maintains
  // the "up" direction as +Y, unlike the TrackballControls. Touch on tablet and phones is
  // supported.
  //
  //    Orbit - left mouse / touch: one finger move
  //    Zoom - middle mouse, or mousewheel / touch: two finger spread or squish
  //    Pan - right mouse, or arrow keys / touch: three finter swipe

  THREE.OrbitControls = function (object, domElement) {
    var constraint = new OrbitConstraint(object);

    this.domElement = domElement !== undefined ? domElement : document;

    // API

    Object.defineProperty(this, "constraint", {
      get: function () {
        return constraint;
      },
    });

    this.getPolarAngle = function () {
      return constraint.getPolarAngle();
    };

    this.getAzimuthalAngle = function () {
      return constraint.getAzimuthalAngle();
    };

    // Set to false to disable this control
    this.enabled = true;

    // center is old, deprecated; use "target" instead
    this.center = this.target;

    // This option actually enables dollying in and out; left as "zoom" for
    // backwards compatibility.
    // Set to false to disable zooming
    this.enableZoom = true;
    this.zoomSpeed = 1.0;

    // Set to false to disable rotating
    this.enableRotate = true;
    this.rotateSpeed = 1.0;

    // Set to false to disable panning
    this.enablePan = true;
    this.keyPanSpeed = 7.0; // pixels moved per arrow key push

    // Set to true to automatically rotate around the target
    // If auto-rotate is enabled, you must call controls.update() in your animation loop
    this.autoRotate = false;
    this.autoRotateSpeed = 2.0; // 30 seconds per round when fps is 60

    // Set to false to disable use of the keys
    this.enableKeys = true;

    // The four arrow keys
    this.keys = { LEFT: 37, UP: 38, RIGHT: 39, BOTTOM: 40 };

    // Mouse buttons
    this.mouseButtons = {
      ORBIT: THREE.MOUSE.LEFT,
      ZOOM: THREE.MOUSE.MIDDLE,
      PAN: THREE.MOUSE.RIGHT,
    };

    ////////////
    // internals

    var scope = this;

    var rotateStart = new THREE.Vector2();
    var rotateEnd = new THREE.Vector2();
    var rotateDelta = new THREE.Vector2();

    var panStart = new THREE.Vector2();
    var panEnd = new THREE.Vector2();
    var panDelta = new THREE.Vector2();

    var dollyStart = new THREE.Vector2();
    var dollyEnd = new THREE.Vector2();
    var dollyDelta = new THREE.Vector2();

    var STATE = {
      NONE: -1,
      ROTATE: 0,
      DOLLY: 1,
      PAN: 2,
      TOUCH_ROTATE: 3,
      TOUCH_DOLLY: 4,
      TOUCH_PAN: 5,
    };

    var state = STATE.NONE;

    // for reset

    this.target0 = this.target.clone();
    this.position0 = this.object.position.clone();
    this.zoom0 = this.object.zoom;

    // events

    var changeEvent = { type: "change" };
    var startEvent = { type: "start" };
    var endEvent = { type: "end" };

    // pass in x,y of change desired in pixel space,
    // right and down are positive
    function pan(deltaX, deltaY) {
      var element =
        scope.domElement === document
          ? scope.domElement.body
          : scope.domElement;

      constraint.pan(deltaX, deltaY, element.clientWidth, element.clientHeight);
    }

    this.update = function () {
      if (this.autoRotate && state === STATE.NONE) {
        constraint.rotateLeft(getAutoRotationAngle());
      }

      if (constraint.update() === true) {
        this.dispatchEvent(changeEvent);
      }
    };

    this.reset = function () {
      state = STATE.NONE;

      this.target.copy(this.target0);
      this.object.position.copy(this.position0);
      this.object.zoom = this.zoom0;

      this.object.updateProjectionMatrix();
      this.dispatchEvent(changeEvent);

      this.update();
    };

    function getAutoRotationAngle() {
      return ((2 * Math.PI) / 60 / 60) * scope.autoRotateSpeed;
    }

    function getZoomScale() {
      return Math.pow(0.95, scope.zoomSpeed);
    }

    function onMouseDown(event) {
      if (scope.enabled === false) return;

      event.preventDefault();

      if (event.button === scope.mouseButtons.ORBIT) {
        if (scope.enableRotate === false) return;

        state = STATE.ROTATE;

        rotateStart.set(event.clientX, event.clientY);
      } else if (event.button === scope.mouseButtons.ZOOM) {
        if (scope.enableZoom === false) return;

        state = STATE.DOLLY;

        dollyStart.set(event.clientX, event.clientY);
      } else if (event.button === scope.mouseButtons.PAN) {
        if (scope.enablePan === false) return;

        state = STATE.PAN;

        panStart.set(event.clientX, event.clientY);
      }

      if (state !== STATE.NONE) {
        document.addEventListener("mousemove", onMouseMove, false);
        document.addEventListener("mouseup", onMouseUp, false);
        scope.dispatchEvent(startEvent);
      }
    }

    function onMouseMove(event) {
      if (scope.enabled === false) return;

      event.preventDefault();

      var element =
        scope.domElement === document
          ? scope.domElement.body
          : scope.domElement;

      if (state === STATE.ROTATE) {
        if (scope.enableRotate === false) return;

        rotateEnd.set(event.clientX, event.clientY);
        rotateDelta.subVectors(rotateEnd, rotateStart);

        // rotating across whole screen goes 360 degrees around
        constraint.rotateLeft(
          ((2 * Math.PI * rotateDelta.x) / element.clientWidth) *
            scope.rotateSpeed
        );

        // rotating up and down along whole screen attempts to go 360, but limited to 180
        constraint.rotateUp(
          ((2 * Math.PI * rotateDelta.y) / element.clientHeight) *
            scope.rotateSpeed
        );

        rotateStart.copy(rotateEnd);
      } else if (state === STATE.DOLLY) {
        if (scope.enableZoom === false) return;

        dollyEnd.set(event.clientX, event.clientY);
        dollyDelta.subVectors(dollyEnd, dollyStart);

        if (dollyDelta.y > 0) {
          constraint.dollyIn(getZoomScale());
        } else if (dollyDelta.y < 0) {
          constraint.dollyOut(getZoomScale());
        }

        dollyStart.copy(dollyEnd);
      } else if (state === STATE.PAN) {
        if (scope.enablePan === false) return;

        panEnd.set(event.clientX, event.clientY);
        panDelta.subVectors(panEnd, panStart);

        pan(panDelta.x, panDelta.y);

        panStart.copy(panEnd);
      }

      if (state !== STATE.NONE) scope.update();
    }

    function onMouseUp(/* event */) {
      if (scope.enabled === false) return;

      document.removeEventListener("mousemove", onMouseMove, false);
      document.removeEventListener("mouseup", onMouseUp, false);
      scope.dispatchEvent(endEvent);
      state = STATE.NONE;
    }

    function onMouseWheel(event) {
      if (
        scope.enabled === false ||
        scope.enableZoom === false ||
        state !== STATE.NONE
      )
        return;

      event.preventDefault();
      event.stopPropagation();

      var delta = 0;

      if (event.wheelDelta !== undefined) {
        // WebKit / Opera / Explorer 9

        delta = event.wheelDelta;
      } else if (event.detail !== undefined) {
        // Firefox

        delta = -event.detail;
      }

      if (delta > 0) {
        constraint.dollyOut(getZoomScale());
      } else if (delta < 0) {
        constraint.dollyIn(getZoomScale());
      }

      scope.update();
      scope.dispatchEvent(startEvent);
      scope.dispatchEvent(endEvent);
    }

    function onKeyDown(event) {
      if (
        scope.enabled === false ||
        scope.enableKeys === false ||
        scope.enablePan === false
      )
        return;

      switch (event.keyCode) {
        case scope.keys.UP:
          pan(0, scope.keyPanSpeed);
          scope.update();
          break;

        case scope.keys.BOTTOM:
          pan(0, -scope.keyPanSpeed);
          scope.update();
          break;

        case scope.keys.LEFT:
          pan(scope.keyPanSpeed, 0);
          scope.update();
          break;

        case scope.keys.RIGHT:
          pan(-scope.keyPanSpeed, 0);
          scope.update();
          break;
      }
    }

    function touchstart(event) {
      if (scope.enabled === false) return;

      switch (event.touches.length) {
        case 1: // one-fingered touch: rotate
          if (scope.enableRotate === false) return;

          state = STATE.TOUCH_ROTATE;

          rotateStart.set(event.touches[0].pageX, event.touches[0].pageY);
          break;

        case 2: // two-fingered touch: dolly
          if (scope.enableZoom === false) return;

          state = STATE.TOUCH_DOLLY;

          var dx = event.touches[0].pageX - event.touches[1].pageX;
          var dy = event.touches[0].pageY - event.touches[1].pageY;
          var distance = Math.sqrt(dx * dx + dy * dy);
          dollyStart.set(0, distance);
          break;

        case 3: // three-fingered touch: pan
          if (scope.enablePan === false) return;

          state = STATE.TOUCH_PAN;

          panStart.set(event.touches[0].pageX, event.touches[0].pageY);
          break;

        default:
          state = STATE.NONE;
      }

      if (state !== STATE.NONE) scope.dispatchEvent(startEvent);
    }

    function touchmove(event) {
      if (scope.enabled === false) return;

      event.preventDefault();
      event.stopPropagation();

      var element =
        scope.domElement === document
          ? scope.domElement.body
          : scope.domElement;

      switch (event.touches.length) {
        case 1: // one-fingered touch: rotate
          if (scope.enableRotate === false) return;
          if (state !== STATE.TOUCH_ROTATE) return;

          rotateEnd.set(event.touches[0].pageX, event.touches[0].pageY);
          rotateDelta.subVectors(rotateEnd, rotateStart);

          // rotating across whole screen goes 360 degrees around
          constraint.rotateLeft(
            ((2 * Math.PI * rotateDelta.x) / element.clientWidth) *
              scope.rotateSpeed
          );
          // rotating up and down along whole screen attempts to go 360, but limited to 180
          constraint.rotateUp(
            ((2 * Math.PI * rotateDelta.y) / element.clientHeight) *
              scope.rotateSpeed
          );

          rotateStart.copy(rotateEnd);

          scope.update();
          break;

        case 2: // two-fingered touch: dolly
          if (scope.enableZoom === false) return;
          if (state !== STATE.TOUCH_DOLLY) return;

          var dx = event.touches[0].pageX - event.touches[1].pageX;
          var dy = event.touches[0].pageY - event.touches[1].pageY;
          var distance = Math.sqrt(dx * dx + dy * dy);

          dollyEnd.set(0, distance);
          dollyDelta.subVectors(dollyEnd, dollyStart);

          if (dollyDelta.y > 0) {
            constraint.dollyOut(getZoomScale());
          } else if (dollyDelta.y < 0) {
            constraint.dollyIn(getZoomScale());
          }

          dollyStart.copy(dollyEnd);

          scope.update();
          break;

        case 3: // three-fingered touch: pan
          if (scope.enablePan === false) return;
          if (state !== STATE.TOUCH_PAN) return;

          panEnd.set(event.touches[0].pageX, event.touches[0].pageY);
          panDelta.subVectors(panEnd, panStart);

          pan(panDelta.x, panDelta.y);

          panStart.copy(panEnd);

          scope.update();
          break;

        default:
          state = STATE.NONE;
      }
    }

    function touchend(/* event */) {
      if (scope.enabled === false) return;

      scope.dispatchEvent(endEvent);
      state = STATE.NONE;
    }

    function contextmenu(event) {
      event.preventDefault();
    }

    this.dispose = function () {
      this.domElement.removeEventListener("contextmenu", contextmenu, false);
      this.domElement.removeEventListener("mousedown", onMouseDown, false);
      this.domElement.removeEventListener("mousewheel", onMouseWheel, false);
      this.domElement.removeEventListener(
        "MozMousePixelScroll",
        onMouseWheel,
        false
      ); // firefox

      this.domElement.removeEventListener("touchstart", touchstart, false);
      this.domElement.removeEventListener("touchend", touchend, false);
      this.domElement.removeEventListener("touchmove", touchmove, false);

      document.removeEventListener("mousemove", onMouseMove, false);
      document.removeEventListener("mouseup", onMouseUp, false);

      window.removeEventListener("keydown", onKeyDown, false);
    };

    this.domElement.addEventListener("contextmenu", contextmenu, false);

    this.domElement.addEventListener("mousedown", onMouseDown, false);
    this.domElement.addEventListener("mousewheel", onMouseWheel, false);
    this.domElement.addEventListener(
      "MozMousePixelScroll",
      onMouseWheel,
      false
    ); // firefox

    this.domElement.addEventListener("touchstart", touchstart, false);
    this.domElement.addEventListener("touchend", touchend, false);
    this.domElement.addEventListener("touchmove", touchmove, false);

    window.addEventListener("keydown", onKeyDown, false);

    // force an update at start
    this.update();
  };

  THREE.OrbitControls.prototype = Object.create(
    THREE.EventDispatcher.prototype
  );
  THREE.OrbitControls.prototype.constructor = THREE.OrbitControls;

  Object.defineProperties(THREE.OrbitControls.prototype, {
    object: {
      get: function () {
        return this.constraint.object;
      },
    },

    target: {
      get: function () {
        return this.constraint.target;
      },

      set: function (value) {
        console.warn(
          "THREE.OrbitControls: target is now immutable. Use target.set() instead."
        );
        this.constraint.target.copy(value);
      },
    },

    minDistance: {
      get: function () {
        return this.constraint.minDistance;
      },

      set: function (value) {
        this.constraint.minDistance = value;
      },
    },

    maxDistance: {
      get: function () {
        return this.constraint.maxDistance;
      },

      set: function (value) {
        this.constraint.maxDistance = value;
      },
    },

    minZoom: {
      get: function () {
        return this.constraint.minZoom;
      },

      set: function (value) {
        this.constraint.minZoom = value;
      },
    },

    maxZoom: {
      get: function () {
        return this.constraint.maxZoom;
      },

      set: function (value) {
        this.constraint.maxZoom = value;
      },
    },

    minPolarAngle: {
      get: function () {
        return this.constraint.minPolarAngle;
      },

      set: function (value) {
        this.constraint.minPolarAngle = value;
      },
    },

    maxPolarAngle: {
      get: function () {
        return this.constraint.maxPolarAngle;
      },

      set: function (value) {
        this.constraint.maxPolarAngle = value;
      },
    },

    minAzimuthAngle: {
      get: function () {
        return this.constraint.minAzimuthAngle;
      },

      set: function (value) {
        this.constraint.minAzimuthAngle = value;
      },
    },

    maxAzimuthAngle: {
      get: function () {
        return this.constraint.maxAzimuthAngle;
      },

      set: function (value) {
        this.constraint.maxAzimuthAngle = value;
      },
    },

    enableDamping: {
      get: function () {
        return this.constraint.enableDamping;
      },

      set: function (value) {
        this.constraint.enableDamping = value;
      },
    },

    dampingFactor: {
      get: function () {
        return this.constraint.dampingFactor;
      },

      set: function (value) {
        this.constraint.dampingFactor = value;
      },
    },

    // backward compatibility

    noZoom: {
      get: function () {
        console.warn(
          "THREE.OrbitControls: .noZoom has been deprecated. Use .enableZoom instead."
        );
        return !this.enableZoom;
      },

      set: function (value) {
        console.warn(
          "THREE.OrbitControls: .noZoom has been deprecated. Use .enableZoom instead."
        );
        this.enableZoom = !value;
      },
    },

    noRotate: {
      get: function () {
        console.warn(
          "THREE.OrbitControls: .noRotate has been deprecated. Use .enableRotate instead."
        );
        return !this.enableRotate;
      },

      set: function (value) {
        console.warn(
          "THREE.OrbitControls: .noRotate has been deprecated. Use .enableRotate instead."
        );
        this.enableRotate = !value;
      },
    },

    noPan: {
      get: function () {
        console.warn(
          "THREE.OrbitControls: .noPan has been deprecated. Use .enablePan instead."
        );
        return !this.enablePan;
      },

      set: function (value) {
        console.warn(
          "THREE.OrbitControls: .noPan has been deprecated. Use .enablePan instead."
        );
        this.enablePan = !value;
      },
    },

    noKeys: {
      get: function () {
        console.warn(
          "THREE.OrbitControls: .noKeys has been deprecated. Use .enableKeys instead."
        );
        return !this.enableKeys;
      },

      set: function (value) {
        console.warn(
          "THREE.OrbitControls: .noKeys has been deprecated. Use .enableKeys instead."
        );
        this.enableKeys = !value;
      },
    },

    staticMoving: {
      get: function () {
        console.warn(
          "THREE.OrbitControls: .staticMoving has been deprecated. Use .enableDamping instead."
        );
        return !this.constraint.enableDamping;
      },

      set: function (value) {
        console.warn(
          "THREE.OrbitControls: .staticMoving has been deprecated. Use .enableDamping instead."
        );
        this.constraint.enableDamping = !value;
      },
    },

    dynamicDampingFactor: {
      get: function () {
        console.warn(
          "THREE.OrbitControls: .dynamicDampingFactor has been renamed. Use .dampingFactor instead."
        );
        return this.constraint.dampingFactor;
      },

      set: function (value) {
        console.warn(
          "THREE.OrbitControls: .dynamicDampingFactor has been renamed. Use .dampingFactor instead."
        );
        this.constraint.dampingFactor = value;
      },
    },
  });
})();
